When it comes to voting in the United States, conservative and liberal Jews don’t agree on many issues. In the high-profile New York City mayoral race, they must now unite over Israel and being Jewish. Zohran Mamdani has divided Jews and mobilized a segment of Jewish voters originally from Israel to support his opponents. Despite sharp party-line differences, a pressing question remains: Can those Jewish voters prevent New York City from electing a socialist who denies Israel’s right to exist as an independent Jewish state and will not even denounce the phrase “Globalize the Intifada”? As Election Day approaches on...